If you have trouble wearing conventional contact lenses or have been told that you are not a suitable candidate for them, you should consult our optometrist about trying scleral contact lenses.
Scleral lenses are large diameter lenses which are also gas permeable. They are referred to as “scleral” because instead of covering a part of the cornea like conventional lenses, they cover the entire corneal surface and rest on the “white” part of the eye, known as the sclera.
Scleral lenses offer the same advantages that conventional gas permeable lenses have compared over soft contacts, which include:
Additionally, scleral lenses are more stable on the eye than the smaller conventional lenses, making them less likely to accidentally dislodge from the eye. Due to their stability, they are also typically more comfortable than conventional lenses.
Scleral lenses are made with highly breathable, rigid and gas permeable lens materials. This ensures that sufficient oxygen reaches the front surface of the eye, keeping it healthy and comfortable.
There are three categories of scleral lenses, each determined by their overall size and where the lenses have their primary contact with the front surface of the eye.
Corneo-scleral Lenses and Semi-scleral Lenses
These lenses are much larger than conventional lenses and rest near the junction between the cornea and the sclera.
Lenses in this category cover the entire corneal surface and rest on the anterior sclera.
The largest scleral lenses, these provide the greatest amount of clearance between the back surface of the lens and the cornea.
If you are seeking the best vision possible with contact lenses, you are generally a strong candidate for scleral lenses. However, scleral lenses are especially ideal for patients with the following conditions:
Irregularly Shaped Corneas
In most cases, vision problems resulting from an irregularly shaped cornea cannot be fully corrected with glasses or soft contact lenses. Scleral lenses typically provide sharper vision for these types of eyes compared to other aids.
Irregularly Shaped Eyes
Due to their characteristics, scleral lenses are ideal if your eyes cannot be comfortably fitted with conventional lenses, or the shape of your eye makes lenses prone to dislodging. Scleral lenses are a more comfortable and secure fit.
If you find traditional contact lenses uncomfortable, check out Sclerals!
Chronically Dry Eyes
The proficient gas permeability of scleral lenses is of great benefit those who have eyes that are too dry for conventional lenses. This is helped by the space between the back surface of scleral lenses and the cornea; it acts as a tear reservoir to keep the front of your eye hydrated and comfortable.